We have a TMG server providing access to OWA to two internal CAS servers. Now we have a new DR Site with its own CAS server and database server.
If I failover a database to the DR site, and I try to access owa, I get this error
The mailbox you're trying to access isn't currently available. If the problem
continues, contact your helpdesk.
If I access OWA directly to the CAS servers in the DR site, I can see the mail. I am thinking it has to do with a referral.
BTW If I also access owa directly to the CAS servers on the primary site bypassing TMG I still get the same error.
what do you think it could be?